Wall Finding For Wireless Lighting Assignment
First Claim
1. A method for determining the location of partition walls (25, 50) within a building (101), using a wirelessly interconnected network of nodes (102, 103, 104, G1, G2, G3), comprising the steps of:
- establishing wireless communication between the nodes to determine relative spatial positions of selected nodes using received signal strength indication (RSSI) values indicative of a distance of separation between two communicating nodes, and generating a first map (64) of the network topology therefrom;
establishing wireless communication between the nodes to determine relative spatial positions of selected nodes using time of flight (ToF) values indicative of a distance of separation between two communicating nodes, and generating a second map (63) of the network topology therefrom; and
comparing the first and second maps to determine the location of partition walls within the building.
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Abstract
A method for determining the location of partition walls within a building uses a wirelessly interconnected network of nodes to determine relative spatial positions of selected nodes using (i) received signal strength indication (RSSI) values and time of flight (ToF) values, both indicative of a distance of separation between two communicating nodes. A first map of the network topology is derived from the RSSI values and a second map of the network topology is derived from the ToF values. The RSSI values are affected by building partition walls whereas the ToF values are relatively unaffected by partition walls. A comparison of the first and second maps is used to determine the location of partition walls within the building.
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Citations
22 Claims
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1. A method for determining the location of partition walls (25, 50) within a building (101), using a wirelessly interconnected network of nodes (102, 103, 104, G1, G2, G3), comprising the steps of:
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establishing wireless communication between the nodes to determine relative spatial positions of selected nodes using received signal strength indication (RSSI) values indicative of a distance of separation between two communicating nodes, and generating a first map (64) of the network topology therefrom; establishing wireless communication between the nodes to determine relative spatial positions of selected nodes using time of flight (ToF) values indicative of a distance of separation between two communicating nodes, and generating a second map (63) of the network topology therefrom; and comparing the first and second maps to determine the location of partition walls within the building. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. Apparatus for determining the location of partition walls (25, 50) within a building (101), using a wirelessly interconnected network of nodes, comprising:
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a first map generator (62) for receiving from a plurality of nodes in the network a plurality of received signal strength indication (RSSI) values each indicative of a distance of separation between two communicating nodes established using wireless communication between the nodes, and generating a first map (64) of the network topology therefrom; a second map generator (62) for receiving from a plurality of nodes in the network a plurality of time of flight (ToF) values each indicative of a distance of separation between two communicating nodes established using wireless communication between the nodes, and generating a second map (63) of the network topology therefrom; and a comparator module (66) for comparing the first and second maps to determine the location of partition walls (25, 50) within the building. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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Specification